Once per day on command, the wielder may touch the rod of nettles to ordinary vegetation, causing a 20-foot cube to become tangled with nettle-choked overgrowth as the overgrowth ability of the plant growth spell. Furthermore, creatures entering or within this area are affected as if touched by the rod, though creatures with a natural armor bonus of +3 or greater are immune to this effect.

A creature that saves is unaffected by the area's poison for 24 hours.